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NVD / CVE Program· CNA Linux

CVE-2026-80759: Bluetooth: hci_aml: validate firmware segment lengths

Noroxi assessment

Priority: Monitor (action score 0/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.16% (FIRST EPSS).
  • Fixed version: Linux Linux 2763b8bcb504e30ec955474f51b99ce42fc62f3b, 2bf6b9baca9372ea51b6d0f2820dc9bf29a83ef4, 6c70253462902d835e843b470f74aa816d60af80.

Low priority for now. Upgrade to Linux Linux 2763b8bcb504e30ec955474f51b99ce42fc62f3b, 2bf6b9baca9372ea51b6d0f2820dc9bf29a83ef4, 6c70253462902d835e843b470f74aa816d60af80 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_aml: validate firmware segment lengths aml_download_firmware() reads two lengths from the firmware header and uses them to build pointers before checking that the header and segment data are present. A truncated or inconsistent firmware image can make the driver read past firmware->data while constructing TCI commands. Reject images shorter than the header and ensure that the ICCM and DCCM ranges fit within the loaded firmware before downloading either segment.

—No exploit Fix available
Published
Sep 4, 2026
Updated
Oct 19, 2026
EPSS
0.1% · 6th percentile
CWE
—

Report tools

JSON

Action score

0

Monitor

Low priority for now.

CVSS
0 / 40 · —
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.1%

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  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

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Noroxi analysis

What does it mean in your environment?

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

—

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • 6.12affected
    • 37bac77e4649e8158698a60addc22ec4faf5649a and later · before 7733b01ed13685773ccda91035a46f87d4cfef7caffected · git
    • 37bac77e4649e8158698a60addc22ec4faf5649a and later · before e1534d49a7b8ba728e84b020f6d802aa1cb759d9affected · git
    • 37bac77e4649e8158698a60addc22ec4faf5649a and later · before 6c70253462902d835e843b470f74aa816d60af80affected · git
    • 37bac77e4649e8158698a60addc22ec4faf5649a and later · before 2763b8bcb504e30ec955474f51b99ce42fc62f3baffected · git
    • 37bac77e4649e8158698a60addc22ec4faf5649a and later · before 2bf6b9baca9372ea51b6d0f2820dc9bf29a83ef4affected · git
    • before 6.12not affected · semver
    • 6.12.106 and later · up to and including 6.12.*not affected · semver
    • 6.18.47 and later · up to and including 6.18.*not affected · semver
    • 7.1.11 and later · up to and including 7.1.*not affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12linux-6.12before 6.12.107-1~deb12u16.12.107-1~deb12u1
Debian:13linuxbefore 6.12.107-16.12.107-1
Debian:14linuxbefore 7.1.12-17.1.12-1
openSUSE:Tumbleweedkernel-sourcebefore 7.2.5-1.17.2.5-1.1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-74705udp: fix potential use-after-free in tunnel segmentation
    40Plan
  • CVE-2026-74612veth: fix skb length accounting after XDP frag adjustment
    40Plan
  • CVE-2026-74475vxlan: use neigh_ha_snapshot() in route_shortcircuit()
    40Plan

Published before and after this one in the same product

  • ← EarlierCVE-2026-80912Sep 4, 2026 · selinux: reject an unclaimed class value in security_get_classes()
    0Monitor
  • ← EarlierCVE-2026-80758Sep 4, 2026 · futex: Avoid private hash use-after-free on final put
    0Monitor
  • Later →CVE-2026-80760Sep 4, 2026 · Bluetooth: MGMT: reject HCI_CMD_SYNC params_len above 255
    0Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux2763b8bcb504e30ec955474f51b99ce42fc62f3bVendor (CNA)
Linux Linux2bf6b9baca9372ea51b6d0f2820dc9bf29a83ef4Vendor (CNA)
Linux Linux6c70253462902d835e843b470f74aa816d60af80Vendor (CNA)
Linux Linux7733b01ed13685773ccda91035a46f87d4cfef7cVendor (CNA)
Linux Linuxe1534d49a7b8ba728e84b020f6d802aa1cb759d9Vendor (CNA)
debian:linux6.12.107-1 · Debian:13Package registry (OSV)
debian:linux-6.126.12.107-1~deb12u1 · Debian:12Package registry (OSV)
opensuse:kernel-source7.2.5-1.1 · openSUSE:TumbleweedPackage registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

No CVSS vector for this record, so attack conditions can't be derived.

Weakness class (CWE)

—

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

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References

Show all references (4 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records